Abstract:
The antibacterial activity of nigella sativa seed extracts :n-hexance, chloroform, 70% MeOH, volatile oil, fixed oil and crude oil was investigated against ten pathogenic bacterial strains: Escherichia coli, pseudomonas aeruginosa, Strphylococcus aureus. Bacillus subtilis, shigella species, Klebsiella species , proteus species, Neisseria catarrhalis, Beta-haemolytic Streptococci , Brucella species. The volatile oil reflects a strong activity against all strains tested at a concentration of 200 ugLm1 followed by hexance and chloroform extracts while the rude oil and 70%Me0H extract showed weak activity against more than five strains at the same concentration. The fixed oil exhibited no activity against any of the tested strains.
